Windshield cleaner operated from



Dec. 29, 1936. H. HUEBER ET AL Re. 20,219

WINDSHIELD CLEANER OPERATED FROM THE] MOTOR VEHICLE LUBRICATING SYSTEM ,Original Filed Feb. 13, 1930 2 Sheets-Sheet 1 Z n undo Hnqg Hueer and E110 in Harlow Dec. 29, 1936. v HUEBER AL Re. 20,219 WINDSHIELD CLEANER QPERATED FROM THE MOTOR VEHIQLE LUBRICATING SYSTEM 2 Sheets-Sheet 2 Original Fifim. Feb. 13, 1930 I gwugnkocs H my Hueer anJ Er win aHarfozo "Reisaued Dec. 29, 1936 WINDSHIELD oraaa'nm raoni CLEANER I THE MOIOB LUBRICATING SIS- llcnry Hueber. Buffalo, and-Erwin C. Horton, Hamburg, N. Y., assignors to Trim Products Corporation, Bail-lo, N. Y.

Original No. 1,981,839, dated November 20, 1934,

Serial No. 428,173, February September cation for reissue No. 40,348

13, 193.. Appli- 12, 1935, Serial 14 Claims. (Cl. "-60) The present invention relates to a device which is adapted to produce or maintain a difference of.

fluid pressure in a line in which it is introduced. and acts more particularly as a booster when attached in aline leading from the intake manii'old of an internal combustion engine to a motor of the suction type to actuate said motor, which may be that of a windshield wiper.

In the operation of suction motors attached to windshield wipers presently in use, it has been found that when the suction. is derived from the intake manifold of an-internal combustion englue, the suction motor does not operate at a sustained rate of speed but varies with the load on the internal combustion engine. Under certain operating conditions of an internal combustion engine, however, the suction in the intake maniiold is not suflicient to actuate such a differential pressure motor at the desired constant speed.

The vision of the operator through the windshield is thereby lowered at those times when the best visibility is desired, 1. e., on starting, or pulling under load, up hill, etc.

To maintain or increase the speed of such a pressure motor it is necessary to sustain a de- I creased pressure in the operating cylinder chamber thereof. The instant invention provides mechanically operated means in the line from the intake manifold to the motor of a windshield wiper for providing sustained and constant suction to maintain the desired speed of the motor accessory.

An object of the invention is to provide a uniform suction for maintaining a constant speed of the motor of a windshield wiper.

Another object is to provide a booster in the suction line from the intake manifold of an internal combustion engine to the motor of a windshield wiper whereby the speed of said motor is maintained at a substantially constant rate irrespective of the load on the internal combustion ll-gl A still further obiect is to provide a pump for supplying fluid pressure to a line from the intake manifold of an internal combustion engine to the motor of a windshield wiper, using the oil pressure of the lubricating system as the driving force for said pump.

'A further object is to provide suction augment- Y ing means, disposed in the passage from an automobile accessory to the intake manifold of the engine of a motor vehicle, designed to operate under those conditions when the fluid pressure in the intake manifold. resisting its operation, is

overcome by the fluid pressure of the circulating fluid system, thereby rendering the augmenting means operable.

In the drawings: Fig. 1' is a schematic view of an internal combustion engine with the pumping device attached.

Fig. 2 is a sectional view of the improved suction augmenter.

Fig. 315 a view through line 33 of Fig. 2.

Fig. 4 is a view through line 4-4 of Fig. 2.

Referring more particularly to the drawings, an internal combustion engine having an oil pressure lubricating system is designated generally by the numeral I.

The booster 2 is connected by tube 3 to a circulating fluid system such as the lubricating system of said engine whereby-oil under pressure is led from said supply to said booster for operating the same, and after expending its energy therein the oil is returned to the oil reservoir by the return pipe line 4.

The booster comprises a pumping element and a drive therefor. The drive preferably consists of a rotor or turbine disc wheel 5, having radial impeller blades 6 conveniently stamped from the disc and turned inwardly, substantially at right angles to the disc. The rotor is contained within a housing which, for ease in construction and assembly, consists of an upper portion I, a central portion l and a lower portion iii. The upper housing portion I is substantially semi-circular in shape to fit over the said rotor and allow sufllcient clearanceibetween said rotor and the inner side of said housing, and is provided with an outwardly extending flange I at its lower edge for attachment to the central housing portion. Holes 9 are provided through which screws I l are inserted for attaching the central housing portion II, by means of threaded holes I! in the outwardly extending flange I3 at the upper edge of said central housing portion. A substantially oiland gas tight connection is produced at the juncture of the flanges I and I! by inserting a gasket ll therebetween.

A female threaded inlet port I is provided adjacent the lower portion of the central housing portion and extends transversely thereintb, tangential to the periphery of said rotor 5. A threaded nipple l6, adapted .to fit and engage within said threaded port, is provided with internal threads adjacent the outer end for threading engagement with the oil feed tube 3, so that when in assembled relation oil under pressure is caused to impact against the said impeller blades i causing continuous rotation of the said rotor i'so long as the impelling force of the oil is greater than the force upon the pump attached to said rotor.

An outlet port I! in the shape of an elbow is provided in the lower housing portion I9 for connection with the outlet tube 4 for carrying the oil, which has expended its kinetic energy, to the oil reservoir of, or back into, the lubricating system.

Thelower housing portion is adapted to enclose the lower portion of the said rotor 5 and is connected with flange I9 of the said central portion by means of the contacting flange 26 of the lower portion through which screws 2| engage. A gasket 22 is inserted between said flanges I9 and 20 to provide an oil tight connection.

The rotor i is mounted within these housing portionsby means of a hub 24 upon a shaft 23' which is jourhalled at 25 and 26 in seats provided at the juncture of the flanges 9 and I2 of the upper and central housing portions I and I9 respectively. A shaft 29, carried within a sleeved extension 29' of the central housingportion III is provided, at one end, with a gear'29 adapted to mesh with a gear 21 on the shaft 23, and at its other end with a crank 36 which has a crank pin 30' engaging in a slot 3| of a cross-head 32. Said cross-head, under influence of said crank, reciprocates within a well 33, carried by the sleeve extension 29' of the central housing portion II)..

The cross-head 32 is constrained in its movement within the well 33 by guideways 34 formed on the inner side of said well, and is connected to the piston 36 by the piston rod 31.

The piston rod is of such length that when the piston is in the lowered position a substantial clearance is provided between the piston head and the cylinder head to allow free flow of fluid from the inlet to outlet ports during the resting as well as operating periods of" the piston.

The reciprocating motion of the cross-head is I transmitted to the piston 36 which is contained within the cylinder 39 formed in the lower housing portion I6. A breather hole 63 is provided in the pump casing above the piston.

An inlet port 42 and an outlet port 43 are contained in the cylinder head and provided with springs 64 and 53 which urge the valve heads 56 and 61 to seat against the head of the valve cham bers.

The chamber 45 is centered with respect to the outlet port 43 while chamber 44 .is displaced with respect to the port 42, said port connecting therewith through the side of said chamber 44.

A venting orifice 56 in the side of valve chamber 46 connects said chamber by means of the exteriorly threaded hollow nipple 69 with a tube 69 which connects to the suction or intake manifold 64 of the internal combustion engine I.

The valve chamber 44 is provided with a centeredinlet .oriflce 6| which is connected by means .of a hollow nipple to a pipe 62, leading to a point at which reduced pressure or suction is desired for instance to a differential pressure motor attached to an automobile accessory such as a windshield wiper 86'.

In theoperation of the instant invention when tube 69 is connected to the intake manifold of an operating internal combustion engine, the fluid pressure within said manifold being less than atmospheric pressure'causes air to enter tube 62. If this tube 62 be connected to a differential pressure motor such as the well known suction motor of a windshield cleaner, pressure in the chamber of said motor will be reduced and said motor become operable.

Since the engine is in operation, oil from the pressure lubricating systemv is also acting to operate the pump, entering through the tube 3 and impinging upon the blades 6 of the rotor Sto impart movement thereto which is transmitted through the gears 21 and 28 to the crank 29, which ,in turn transmits reciprocating motion to the piston 36. On the intake stroke the valve in chamber 45 tends to'seat and that in chamber to be depressed thus allowing air to be drawn into the cylinder 31, exhausting through the'breather hole 63. On the exhaust stroke the opposite action is produced and air expelled through tube 69 to the intake manifold.

When the internal combustion engine is running normally the suction in the intake manifold is-sufilcient to unseat the valves in both chambers and draw air through inlet 62 into chamber 44 and into the cylinder, since there is clearance between the cylinder head and the piston in its lowermost position, through the, outlet 43, thence through chamber 45 and so into the intake manifold.

With the manifold suction of a suflicient degree, the auxiliary device may remain idle or at rest, and since the impelling force, the circulating lubricant, is a resistible flow of fluid, the action of the manifold suction is such as to arrest the pumping action in more or less complete counter-action to the rotor motion or urge. In other words the piston is held by the manifold suction against reciprocation regardless of the flowing of the lubricant against the rotor. This arrest of the auxiliary device takes place without injury to the mechanism and avoids unnecessary wear of parts which occurs in a constantly operating device.

The lubricating system therefore continues to function regardless of the pressure of the pump therein or of the resistance offered thereto by the manifold suction. Thisis insured by reason of the clearance about the rotor which constitutes a by-pass or passage about the driven element 6 to permit free flow of the lubricant when the pump is arrestedjor retarded by the manifold suction.

What is claimed is:

1. In a motor vehicle power plant including an internal combustion engine, and its circulating fluid system, a suction operated accessory, a motor housing having a plurality of chambers, a rotor contained in one chamber having inlet and outlet ports connected intothe fluid system, said inlet port disposed in said rotor chamber tangential to said rotor and said rotor having clearance in its chamber permitting fluid flow past the rotor, and operative connections from said rotor to pumping means contained in another of said chambers, said pumping means being connected to,the accessory by a passage and responsive to'ajpredetermined pressure in the passage for resisting fluid actuation of the rotor.

'2. In a motor vehicle powerplant including an internal combustion engine, its circulating lubrieating system, and a suction operated accessory; a suction pump connected to the accessory by g. a passage for providing an operating suction r 30,919 therefor, a motor for operating said pump, said I charged into the chamber and against the drive member in Jet form and said chamber being provided with by -pass means about the drive member whereby the lubricant may by-pass the.

drive member when the latter is abnormally resisted'.

3.-In a motor vehicle power plant including an internal combustion engine, its circulating fluid system and its intake manifold, a suction operated accessory, a passage connecting the accessory to the intake manifold, an auxiliary suction pump interposed in said passage and responsive to predetermined pressure conditions therein, a rotor interposed in the said circulating fluid system to be operated by the fluid bypass means being provided permitting fluid slippage by the rotor when abnormally resisted, and operative connections between said pump and rotor.

4. In a motor vehicle power plant including an internal combustion engine, its circulating fluid system and its intake manifold, a suction operated accessory, a passage connecting the ac cessory to the intake manifold, a suction pump interposed in said passage and having a fluid displacing member responsive to a predetermined pressure in the passage, a rotor interposed in the saidcirculating system, and operative connections between said pump and rotor, said rotor being'rendered automatically operable and inoperable in accordance with predetermined differences between the fluid pressures in the said connection passage and said circulating system.

'5. In combination with the intake manifold and the lubricating system of a motor vehicle internal combustion engine, a'su'ction operated accessory, and a passage connecting the accessory to the manifold, of a suction booster pump having valved inlet and outlet ports connected 'into the passage for permitting a flow of fluid under negative pressure from the accessory to the manifold, and a fluid motor for said pump including a fluid driven element operated upon by the lubricant of said system for actuating the pump to create a boosting supply of negative pressure for the operation of said accessory, said motor having a passage about said element for permitting flowof the lubricant in said system when the manifold suction preponderates the pressure of the lubricant flow on said element.

6. In combination with an internal combustion engine having a circulating lubricating system,

a suction operated accessory and a conduit for connecting the accessory to a source of pressure less than atmospheric pressure, a fluid displacing device connected in said conduit for decreasing the pressure in said conduit relative to atmospheric pressure, said fluid displacing device being operated by a motor connected in the lubricating system to be operated by the flow of lubricant, and said motor having means adapting the same for idle slippage 'of lubricant therethrough when the pressure in the conduit reaches a predetermined minimum.

7. In combination with an internal combustion engine having an intake manifold and a circulating fluid system, a suction operated acand a housing for the rotor having'an inlet and I an outlet connected in the circulating fluid system, said housing between the inlet and outlet having a clearance permitting of fluid circulating by the rotor when movement of the latter is resisted abnormally by the piston.

8. In a motor vehicle power plant including an internal combustion engine and its circulating fluid system, an accesso y, pumping means connected to the accessory by a e for operating the same by fluid pressure. a housing, a rotor journalled in the housing, means for directing a jet of fluid from the system against the rotor to operate the same, said rotor having clearance in the housing permitting fluid flow past the rotor when the latter is resisted in its free rotation, and an operative connection from the rotor to the pumping means for operating the accessory.

9. In a motor vehicle power plant including an internal combustion engine, its circulating lubricating system and an accessory, a pump connected to the accessory bya e for operating the same by fluid pressure, a motor for op?- erating said pump, said motor comprising a chamber and a drive member arranged in the chamber-and connected to the pump for operating the latter, the lubricant being discharged into the chamber and against the drive member in jet form and said chamber having fluid passage means about the drive member whereby the lubricantmay by-pass the drive member when the latter is abnormally resisted,

10. In combination with an internal combustion engine having a circulating lubricating system, an accessory, and a conduit connected to the accessory, a-fluid displacing device connected to the conduit for operating the accessory by fluid pressure, said device being operated by a motor, means for providing a flow of the lubricant to effect operation of the motor, said motor provided with means permitting idle slippage of lubricant therethrough when the operation of the fluid displacing device is abnormally resisted.

11. In a motor vehicle power plant including aninternal combustion engine and its circulating fluid system, a motor having a rotorwith means for directing a stream of the fluid from the system against the rotor for imparting move- I ment thereto, said motor having a passage permitting idle slippa e of the fluid therethrough when the rotor is abnormally resisted, and means operativeiy connected to the rotor for operating an accessory.

12. In combination with an internal mmbustion engine havinga circulating lubricating system, an accessory, and means for operating said accessory, said means being operable by the flow of lubricant in said system and including a motorchamberinterposedinan formingapart of the circulating lubricating system, a drive 4 member arranged in the chamber and operable by the flow of lubricant therethrough, means being provided to by-pass the lubricant when the drive member is abnormally resisted whereby the circulation of the lubricant is continued uninterruptedly, and fluid premire means operatively connecting the drive to the accessory for-operating the same.

13. In combination with an internal combus- -tion engine having a circulating lubricating sysby the flow of lubricant therethrough, means being provided to by-pass the lubricant when the drive member is abnormally resisted whereby the circulation of the lubricant is continued uninterruptedly, and means operable by the drive member for eflfecting operation of the accessory.

14. In a motorvehicle power plant including an internal combustion "engine, and its circulating fluid system, a suction operated accescry, a motor housing-having a plurality of chambers, a rotor contained in one chamber having inlet and outlet ports connected into the fluid system, said inlet port disposed in said rotor chamber to direct a jet of fluid against the rotor; said rotor having clearance in its chamber permitting fluid flow past the rotor, and operative connections from said rotor to pumping means contained in another of said chambers, said pumping means being connected to the acce'ssory by a passage and responsive to a predetermined pressure in the "passage for resisting fluid actuation of the rotor.

' HENRY HUEBER.

ERWlN C. HORTON. 

